39968155 has 8 divisors (see below), whose sum is σ = 48204000. Its totient is φ = 31813056.

The previous prime is 39968141. The next prime is 39968161. The reversal of 39968155 is 55186993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39968155 - 2¹¹ = 39966107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19090 + ... + 21079.

It is an arithmetic number, because the mean of its divisors is an integer number (6025500).

Almost surely, 2^39968155 is an apocalyptic number.

39968155 is a deficient number, since it is larger than the sum of its proper divisors (8235845).

39968155 is a wasteful number, since it uses less digits than its factorization.

39968155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40373.

The product of its digits is 291600, while the sum is 46.

The square root of 39968155 is about 6322.0372507602. The cubic root of 39968155 is about 341.9044082667.

The spelling of 39968155 in words is "thirty-nine million, nine hundred sixty-eight thousand, one hundred fifty-five".